Rich Kotite was hired in 1990 to replace Ted Plumb as offensive coordinator of the Philadelphia Eagles. He was promoted to head coach after the firing of his predecessor, Buddy Ryan.

Kotite led the Eagles to 10- and 11-win seasons in 1991 and 1992, respectively, despite the loss of Eagles quarterback Randall Cunningham for the season with a torn anterior cruciate ligament on opening day of 1991, but still with the draft talent that had been selected by Buddy Ryan over the preceding five years. The defense that year under Bud Carson, architect and defensive coordinator of Pittsburgh's famed Steel Curtain of the 1970s, led the league by accomplishing the rare trifecta of being the number one run defense, the number one pass defense, and number one in total defense. The Eagles were a wild card in the 1992 playoffs, finishing 8–0 at home. However, in the spring of 1993, the talent that had been drafted by Buddy Ryan began leaving the Eagles during free agency. Kotite had poor drafts and the level of talent dropped precipitously as his draft picks began replacing the talent that had been drafted by Ryan. In the 1993 season, the Eagles went 8–8. One of the many things for which Kotite was criticized for in Philadelphia was for saying at the conclusion of the season, "Hey, eight and eight is great." An incident which seemed to antagonize Eagles fans occurred the following season, in a Week 7 game against the Cowboys that the Eagles lost 24–13. At the post-game press conference, when asked, he stated that the reason he went for a (failed) two point conversion attempt rather than kick the point after following the second touchdown late in the fourth quarter, was because the "rain made the ink run and blurred the chart, so I couldn't see what was written on it to know what to do."

The Eagles began the 1994 season 7–2, including a 40–8 thrashing of that season's eventual Super Bowl XXIX champion San Francisco 49ers, and Kotite achieving his seventh win against the Arizona Cardinals, then coached by his former boss, Buddy Ryan. Looking forward, a playoff berth seemed assured and Kotite's future seemed bright. In the spring of that year the Eagles were purchased by Jeffrey Lurie from former owner Norman Braman. Whenever asked by the media if he was going to retain Rich Kotite as head coach of the Eagles going forward after the season, Lurie usually replied to the effect that it was too early in the process to be able to say anything, that any measured evaluation would have to take place at the conclusion of the season, and that he wished to keep his options open. After beating the Cardinals for that seventh win, Kotite sarcastically used Lurie's words and told the media that he would be doing his own evaluations at the end of the season and keeping his own options open. The Eagles lost all seven of their remaining games, finishing the season 7–9, behind the Cowboys (12–4), Giants (9–7), and Cardinals (8–8), then still in the NFC East; Kotite was fired by the Eagles one day after the season ended.

After the Eagles let him go, he returned to his home town as head coach of the New York Jets, who had just fired Pete Carroll after one losing season (6–10). Owner Leon Hess named Kotite general manager as well. But under his leadership, the Jets suffered what are still the two worst seasons in franchise history. Kotite won only four games in two seasons, falling to 3–13 in 1995 and 1–15 in 1996 for the worst record in the league both years.[2] Poorly handled drafts contributed to the disappointing seasons, most notably Kotite's first round selection of tight end Kyle Brady over the heavily favored Warren Sapp in 1995. The losing seasons and inept drafts led to mockery; Jets fans started calling him Rich Kotex, a crude reference to a popular feminine hygiene product. Two days before the last game of the 1996 season, Kotite announced he was stepping down as head coach and has not coached in the NFL again in any capacity.[3]

After his coaching days were over, Kotite was involved in two TV promotional commercials, for the USA Network's during the US Open Tennis championships, and for AmeriTrade during the Super Bowl XXXIV pregame show casting him as father of a son who surprises him by telling him he wants to be a Broadway dancer. He continued his media career for the NFL as a regular contributor to NFL Films programming on the NFL Network in particular, including the NFL Top 10 show.